Use a graphing calculator and the method of matrix inverses to Give five decimal places, if necessary.
-A bookstore is having a sale. All books included in the sale have a colored sticker on them to indicate the sale price. There are green stickers, red stickers, and orange stickers. Bob, Sue, and Fred each make purchases of books that are on sale. Each row of the table gives information about the numbers of book purchases and the total cost of the purchase (before taxes).

\begin{array}{c|c|c|c|r}\text { Person } & \text { Green } & \text { Red } & \text { Orange } & \text { Total Cost } \\\hline \text { Bob } & 1 & 2 & 2 & \$ 29.04 \\\text { Sue } & 1 & 3 & 2 & \$ 35.91 \\\text { Fred } & 1 & 2 & 3 & \$ 34.21\end{array}

Use this information to set up a matrix equation of the form

\mathrm { AX } = \mathrm { B }

, which can be solved to determ: the price for each type of sale book. Solve this matrix equation to find the price of a book with an ori sticker.
Use the fact that for

A = \left[ \begin{array} { l l l } 1 & 2 & 2 \\ 1 & 3 & 2 \\ 1 & 2 & 3 \end{array} \right] , A ^ { - 1 } = \left[ \begin{array} { r r r } 5 & - 2 & - 2 \\ - 1 & 1 & 0 \\ - 1 & 0 & 1 \end{array} \right]

.
A)

\$ 5.17

\$ 5.64

\$ 4.81

\$ 5.06

Provide an Appropriate Response 5×55 \times 55×5 Zero Matrix

Multiple Choice

Correct Answer:VerifiedUnlock this answer nowGet Access to more Verified Answers free of chargeAccess For Free

Provide an Appropriate Response $5 \times 5$ Zero Matrix

Correct Answer:
Verified
Unlock this answer now
Get Access to more Verified Answers free of charge